package top.yekongle.springcloud.controller;

import com.sun.jndi.toolkit.url.Uri;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import top.yekongle.springcloud.entity.CommonResult;
import top.yekongle.springcloud.entity.Payment;
import top.yekongle.springcloud.lb.LoadBalancer;
import top.yekongle.springcloud.service.PaymentFeignService;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author Yekongle
 * @date 2020/10/19 22:58
 */
@RestController
@Slf4j
public class OrderController {
    //public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Autowired
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;

    @Resource
    private PaymentFeignService paymentFeignService;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id) {
        //return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        return paymentFeignService.getPayment(id);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        } else {
            return new CommonResult<>(444, "操作失败！");
        }
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> serviceInstanceList = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");

        if (serviceInstanceList == null || serviceInstanceList.isEmpty()) {
            return "No instance";
        }

        ServiceInstance serviceInstance = loadBalancer
                .instances(serviceInstanceList);
        URI uri = serviceInstance.getUri();

        return restTemplate.getForObject(uri + "/payment/lb", String.class);
    }

    @GetMapping("consumer/payment/feign/timeout")
    public String paymentFeignTimeout() {
        // openfeign-ribbon, 客户端默认等待一秒钟
        return paymentFeignService.paymentFeignTimeout();
    }
}
